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bonding: Advertize vxlan offload features when supported

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When the underlying device supports TCP offloads for VXLAN/UDP
encapulated traffic, we need to reflect that through the hw_enc_features
field of the bonding net-device. This will cause the xmit path
in the core networking stack to provide bonding with encapsulated
GSO frames to offload into the HW etc.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Or Gerlitz 2014-06-17 16:11:09 +03:00 • committed by David S. Miller
commit 5a7baa7885
1 changed files with 9 additions and 0 deletions
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9
drivers/net/bonding/bond_main.c
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@ -1025,10 +1025,14 @@ static netdev_features_t bond_fix_features(struct net_device *dev,
NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
NETIF_F_HIGHDMA | NETIF_F_LRO)
#define BOND_ENC_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | NETIF_F_RXCSUM |\
NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL)
static void bond_compute_features(struct bonding *bond)
{
unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE;
netdev_features_t vlan_features = BOND_VLAN_FEATURES;
netdev_features_t enc_features = BOND_ENC_FEATURES;
struct net_device *bond_dev = bond->dev;
struct list_head *iter;
struct slave *slave;
@ -1044,6 +1048,9 @@ static void bond_compute_features(struct bonding *bond)
vlan_features = netdev_increment_features(vlan_features,
slave->dev->vlan_features, BOND_VLAN_FEATURES);
enc_features = netdev_increment_features(enc_features,
slave->dev->hw_enc_features,
BOND_ENC_FEATURES);
dst_release_flag &= slave->dev->priv_flags;
if (slave->dev->hard_header_len > max_hard_header_len)
max_hard_header_len = slave->dev->hard_header_len;
@ -1054,6 +1061,7 @@ static void bond_compute_features(struct bonding *bond)
done:
bond_dev->vlan_features = vlan_features;
bond_dev->hw_enc_features = enc_features;
bond_dev->hard_header_len = max_hard_header_len;
bond_dev->gso_max_segs = gso_max_segs;
netif_set_gso_max_size(bond_dev, gso_max_size);
@ -3975,6 +3983,7 @@ void bond_setup(struct net_device *bond_dev)
NETIF_F_HW_VLAN_CTAG_FILTER;
bond_dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM);
bond_dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
bond_dev->features |= bond_dev->hw_features;
}